Think Again

Discover how you really think.

ThinkAgain brings classic philosophical thought experiments to your pocket. Challenge your intuitions, uncover hidden biases, and compare your reasoning with thousands of others.

EXPLORE TIMELESS QUESTIONS

• Mary's Room: Can you learn something new from experience that no amount of facts could teach you?

• Valid or Invalid: Test your logical reasoning with syllogisms that have stumped students for centuries.

• Battleground God: Navigate a minefield of 17 statements about God and morality. Can you reach the end without contradicting yourself?

• Philosophical Health Check: Examine 30 pairs of beliefs. How many tensions lurk in your worldview?

• Carneades' Dilemma: Face an impossible choice at sea. What would you do when there's no right answer?

• The Trolley Problem: Should you push the fatman? Four variations on philosophy's most infamous dilemma.

• The Wason Selection Task: A deceptively simple logic puzzle that exposes how context shapes reasoning.

• The Framing Effect: Watch your preferences flip based on how options are presented.

• The Drowning Child: If you'd save a drowning child, why not donate to charity? Peter Singer's challenge.

• Who Said It?: Match quotations to philosophers. Harder than it sounds.

UNDERSTAND YOUR PATTERNS

After each experiment, receive detailed analysis of your responses. Discover your:
• Reasoning style and cognitive biases
• Consistency across related questions
• Performance compared to global averages
• Tendency toward certain philosophical positions

COMPARE WITH THOUSANDS

See how your responses stack up:
• Global statistics across all users
• Breakdowns by age, education, and country
• Real-time data updated as more people participate
• Anonymous and privacy-focused

UNLOCK DEEPER INSIGHTS

Upgrade to Premium for:
• Detailed demographic comparisons
• Advanced pattern analysis
• Unlimited access to all features
• One-time purchase, no subscription

DESIGNED FOR DISCOVERY

• Beautiful, distraction-free interface
• Clear explanations of philosophical concepts
• No ads, no tracking, no algorithmic feeds
• Works offline for experiments you've completed

GROUNDED IN RESEARCH

These aren't arbitrary questions. Each experiment is based on real philosophical thought experiments that have shaped debates in ethics, epistemology, logic, and metaphysics. ThinkAgain makes them accessible without dumbing them down.

YOUR DATA STAYS YOURS

• All results stored locally on your device
• Optional anonymous sharing for statistics
• Delete everything with one tap
• No personal information collected

Whether you're a philosophy student, a curious skeptic, or someone who enjoys a good mental workout, ThinkAgain offers a unique window into how you think—and how that compares to everyone else.

Download now and start questioning your assumptions.